The test gcc.dg/loop-8.c makes assumptions that are not valid on Power
architecture (and on certain other architectures for which this issue
has already been addressed). The test case assumes that a single
loop-invariant statement will be moved outside the loop. On Power, a
constant is copy-propagated within the loop, and the subsequent
loop-invariant code motion moves two loop-invariant statements out of
the loop.
This patch simply disables this test case on Power architecture.
gcc/testsuite/ChangeLog:
2017-01-23 Kelvin Nilsen <kel...@gcc.gnu.org>
PR target/66669
* gcc.dg/loop-8.c: Modify dg-skip-if directive to exclude this
test on powerpc targets.
Index: gcc/testsuite/gcc.dg/loop-8.c
===================================================================
--- gcc/testsuite/gcc.dg/loop-8.c (revision 244730)
+++ gcc/testsuite/gcc.dg/loop-8.c (working copy)
@@ -1,6 +1,6 @@
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-rtl-loop2_invariant" } */
-/* { dg-skip-if "unexpected IV" { "hppa*-*-* mips*-*-* visium-*-*" } { "*" } {
"" } } */
+/* { dg-skip-if "unexpected IV" { "hppa*-*-* mips*-*-* visium-*-*
powerpc*-*-*" } { "*" } { "" } } */
void
f (int *a, int *b)
